1)Someone drinking booze with shaky hands and spills thier beverage.
2)Someone so drunk they completely or partially miss thier mouth when consuming from a shot glass.
3)Someone who cannot fill a shot glass...
4)Someone who spills beverage all over for any reason at all.
2)"Wow you wasted half the bottle filling 2 shots glasses?" "Fu*king spilly drinker."
3)Hey Mr.Spilly Drinker, Do you have parkinsons disease? You cant even hold your drink with out spilling it!